False target discrimination method of strapdown semi-active laser target sensor

The invention relates to a false target discrimination method for a strapdown semi-active laser target sensor, which is suitable for the situation that the strapdown semi-active laser target sensor is seriously influenced by interference such as scattered light and the like and is easy to mistakenly recognize a false target. In a working process, 1) a control system calculates a sight line unit vector reference value of an inertial coordinate system in real time, and compares the sight line unit vector reference value with a sight line unit vector measurement value of the inertial coordinate system calculated by actual output of a sensor, and if an angle difference value between the sight line unit vector reference value and the sight line unit vector measurement value is greater than Maxvalue, it is judged that the sensor recognizes a false target, and a next instruction is executed; and 2) the sensor outputs intercepted laser energy and gear information in real time, the intercepted laser energy and the gea